srivikas89
Newbie level 3
ac input to adc
hello there..
i m using a microcontroller which has a built-in ADC in it.. now i have to measure an AC signal using dat ADC...can u please tell if the ADC can measure the negative half-cycles of an AC signal..? or shud i give the signal thru some external circuitry first? the ADC needs positive-going zero-crossings to measure the line frequency..
can i use a rectifier - half or full wave...? or shud i shift the reference voltage of the ADC? please do reply soon...
thanks..
hello there..
i m using a microcontroller which has a built-in ADC in it.. now i have to measure an AC signal using dat ADC...can u please tell if the ADC can measure the negative half-cycles of an AC signal..? or shud i give the signal thru some external circuitry first? the ADC needs positive-going zero-crossings to measure the line frequency..
can i use a rectifier - half or full wave...? or shud i shift the reference voltage of the ADC? please do reply soon...
thanks..